What do the new popover "Normals" in 2.80 do? How to use it?
It seems normals can be set with tools like Set From Faces, Average Normals, Point Normals to Target or Smoothen, but Set Strength or Face Select in the Mesh->Normals menu does not work at all unless Weighted Normal Modifier is added and Face Influence in it is enabled. Those Face Strength settings are the same as in Properties Editor's Active Tool and Workspace tab and they are for Set Strength in Mesh->Normals menu:



Keeping in mind how absolutely ridiculous and unnecessarily complex this functionality is, I would be surprised if it makes it into 2.80 release as it is now. Hopefully it will change to something a lot more logical.